渡したパスのファイルをWindowsMediaPlayerで実行して閉じるやつ

WMPhandler.cs

using System;
using System.Windows.Automation;
using System.Diagnostics;

namespace WMPhandler
{
    class Program
    {
        static void Main(string[] args)
        {
            string file = "C:\\Windows\\media\\Windows Background.wav";
            string[] argument = System.Environment.GetCommandLineArgs();

            System.Diagnostics.Process process = new System.Diagnostics.Process();
            System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo();

            if (argument.Length > 1)
            {
                file = argument[1];
            }
            for(int i = 1;i<argument.Length;i++)
            {
                switch (argument[i])
                {
                    case ("/hidden"):　// /hiddenオプションを付けるとWMPを隠して実行
                        startInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden; // サブプロセスのウィンドウを隠す       
                        break;
                    default:
                        file = argument[i];
                        break;
                }
            }

            startInfo.FileName = "\"C:\\Program Files (x86)\\Windows Media Player\\wmplayer.exe\"";
            startInfo.Arguments = "/play \"" + file + "\"";
            process.StartInfo = startInfo;
            process.Start();

            System.Threading.Thread.Sleep(1000);
            CloseWnd();
        }

        static void CloseWnd()
        {
            IntPtr hWnd = GetWnd();

            if (hWnd == IntPtr.Zero) return;

            AutomationElement ae = AutomationElement.FromHandle(hWnd);
            TreeScope ts1 = TreeScope.Descendants | TreeScope.Element;

            AutomationElement ae1 = ae.FindFirst(ts1, new PropertyCondition(AutomationElement.NameProperty, "候補ビュー"));
            AutomationElement ae2 = ae1.FindFirst(ts1, new PropertyCondition(AutomationElement.NameProperty, "svSuggestions"));


            while (ae2 == null)
            {
                if (GetWnd() == IntPtr.Zero) return;
                ae2 = ae1.FindFirst(ts1, new PropertyCondition(AutomationElement.NameProperty, "svSuggestions"));
            }

            AutomationElement title = ae.FindFirst(ts1, new PropertyCondition(AutomationElement.LocalizedControlTypeProperty, "タイトル バー"));
            InvokePattern close = title.FindFirst(ts1, new PropertyCondition(AutomationElement.NameProperty, "閉じる")).GetCurrentPattern(InvokePattern.Pattern) as InvokePattern; ;
            close.Invoke();

        }

        static IntPtr GetWnd()
        {
            IntPtr hWnd = IntPtr.Zero;
            string winTitle = "Windows Media Player";
            int RetlyCount = 3;
            int RetryWaitms = 1000;

            for (int i = 0; i < RetlyCount; i++)
            {
                Process[] ps = Process.GetProcesses();
                foreach (Process pitem in ps)
                {
                    if (pitem.MainWindowTitle.Equals("")) continue;
                    if (pitem.MainWindowHandle != IntPtr.Zero && pitem.MainWindowTitle.Equals(winTitle))
                    {
                        hWnd = pitem.MainWindowHandle;
                    }
                }
                if (hWnd != IntPtr.Zero) break;
                if (i < (RetlyCount - 1)) System.Threading.Thread.Sleep(RetryWaitms);
            }

            return hWnd;
        }
    }
}